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Building secure networks is one of the most important tasks of information security. The paper describes the main technologies of dynamic networks and technologies for secure communication in them. Also this paper reviews and compares the system developed by the authors for the secure exchange of data in dynamic networks using encryption with data technology.
When configuring a delay tolerant network (DTN), there are many aspects that need to be taken into consideration for an effective and efficient network. One aspect is a buffer management strategy. Buffer strategies are used to determine which packets need to be forwarded or dropped. This paper will focus on the variety of buffer management strategies available, providing a comprehensive survey and...
A lot of research has been proposed to improve network performance in the data center. However, with the development of distributed applications, these applications face a new performance bottleneck since existing solutions almost ignore the application level optimization. The concept of coflow has been proposed which provides a chance for us to optimize network in application level rather than individual...
There has been a significant increase in the number of sensors deployed to accomplish military missions. These sensors might be on manned or unmanned resources, and might collect quantitative and/or qualitative information important for mission success. Of critical importance for mission success is ensuring that the collected information is routed to the people/systems that need the information for...
With the fast development of cloud computing and online business of Internet, the importance of data center is gradually increasing. Conventional Ethernet protocols can hardly meet the scalability and performance requirements of data centers (DCs). The traditional method solves the congestion problem by reducing the network throughput. In this paper, based on software-defined networks (SDNs) technology,...
In this paper we analyze the applicability of onion routing on Predictable Delay-Tolerant Networks. We show that a simple approach for providing anonymity through the application of a simple onion routing can be feasible in some scenarios. To that end we evaluate our proposal on a network based on a city public bus transportation network.
In the area of applied optimisation, heuristics are a popular means to address computational problems of high complexity. Modelling the problem and mapping all variations of its solution into a so-called solution space are integral parts of this process. Representing solutions as graphs is common and, for a special type of graph, Prüfer Code (PC) offers a computationally efficient mapping (algorithms...
Managing a one-way vehicle sharing system means periodically moving free access vehicles from excess to deficit stations in order to avoid local shortages. We perform a lower bound analysis for the static version of the resulting operational decision problem, and derive from this analysis two heuristic algorithms whose main feature is to be vehicle oriented, which means that they focus on the way...
Fragmentation in Elastic Optical Networks is an issue caused by isolated, non-aligned, and non-contiguous frequency slots that can not be used to allocate new connection request to the network, due to the optical layer restrictions imposed to the Routing and Spectrum Assignment (RSA) algorithms. To deal with this issue, several studies about Spectrum Defragmentation have been presented. In this work,...
Over the past few years, electric vehicles are gaining recognition as a feasible alternative for the present day automobiles. Today's environmental scenario has instigated the authorities and entities to reduce the usage of fuel. This has initiated a surge in the market share of electric vehicles. In this paper, a Nearest Neighbour Search-based optimal routing of electric vehicles has been presented...
Recent rapid scale out of high performance computing systems has rapidly and continuously increased the scale and complexity of the interconnects. As a result, current static and over-provisioned interconnects are becoming cost-ineffective. Against this background, we have been working on the integration of network programmability into the interconnect control, based on the idea that dynamically controlling...
Developed cities are facing a serious problem of traffic congestion that leads to the wastage of both fuel and time of the commuters. To alleviate this problem, a preemptive HAPO (HAPO-P) algorithm has been presented in the literature to reduce the trip time by combining HAPO algorithm with preemptive traffic control. The HAPO-P algorithm is able to minimize the travel time to some extent, but dynamic...
This paper deals with routing algorithm of mobile robot, especially Legged Robot. A six-legged robot is set to run on a labyrinth and look for a fire to extinguish it. Robot start with identifying its initial position and then navigate to the fire position candidates. When the robot correctly identified its initial position then the routing can be done successfully. However, by only using mapping...
Test nodes selection problem in QoE (Quality of Experience) measurement network is to select a few number of nodes in service network to test users’ experience information as much as possible. In this paper, test nodes selection problem with test capacity constraint is considered. To begin with, we describe it as a constrained set covering problem and develop a 0-1 integer nonlinear programming model...
The flow aggregation scheme which aggregates a large number of finer-grained services into one large flow can save transceivers and improve spectrum efficiency. It ensures that all services in the aggregated flow have a same routing. Moreover, the spectrum allocated to all finer-grained services in the aggregated flow is continuous. Compared with independent transmission scheme which conducts the...
We present a heuristic algorithm to address the optimization problem of routing and spectrum allocation, aimed at traffic protection and restoration in an elastic optical network. The algorithm searches for working and backup disjoint paths, using the shared path protection scheme. It divides the spectrum into two partitions and prioritizes slots in one of them for backup path traffic. The way the...
Packet classification is an important part of many networking devices, such as routers and firewalls. Software-defined networks require online packet classification where classifiers receive a mixed stream of packets to classify and rules to update and both operations must be completed as efficiently as possible without knowledge of future operations. This rules out many classifiers, such as HyperCuts,...
The design of routing protocol in mobile social delay tolerant networks is a tricky issue due to lack of stable end-to-end path, frequent link disconnection and changeable network topology. This paper proposes a novel routing algorithm based on dynamic topological potential and social relationship (DTPSR) between nodes for mobile social delay tolerant networks. In DTPSR, we define three metrics to...
A cognitive vehicle network is date from Vehicular Ad hoc Networks (VANET), which is proposed to solve the problem of control channel and spectrum scarcity in VANET. To resolve channel conflict problem in channel switching in vehicle network, a new dynamic spectrum allocation algorithm (DSAARCC) is proposed. When the vehicle user chooses the channel, to minimize the average delay under the condition...
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